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OMAP2: Devkit8000: Setup LCD reset

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This patch corrects the LCD reset pin configuration.

Original code from early devkit8000 patch sets the TWL4030 GPIO_1
to EHCI_nOC and TWL4030_GPIO_MAX+1 to ledA. Indeed these two pins
are both LCD_PWREN. Setup the lcd reset_gpio properly so it can be
disabled when other display is turned on.

Signed-off-by: Kan-Ru Chen <kanru@0xlab.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Kan-Ru Chen 2010-07-05 17:04:40 +03:00 committed by Tony Lindgren
parent 31c73f74f3
commit 4098609898
1 changed files with 11 additions and 0 deletions
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11
arch/arm/mach-omap2/board-devkit8000.c
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@ -134,11 +134,15 @@ static int devkit8000_panel_enable_lcd(struct omap_dss_device *dssdev)
twl_i2c_write_u8(TWL4030_MODULE_GPIO, 0x80, REG_GPIODATADIR1);
twl_i2c_write_u8(TWL4030_MODULE_LED, 0x0, 0x0);
if (dssdev->reset_gpio != -EINVAL)
gpio_set_value(dssdev->reset_gpio, 1);
return 0;
}
static void devkit8000_panel_disable_lcd(struct omap_dss_device *dssdev)
{
if (dssdev->reset_gpio != -EINVAL)
gpio_set_value(dssdev->reset_gpio, 0);
}
static int devkit8000_panel_enable_dvi(struct omap_dss_device *dssdev)
@ -183,6 +187,7 @@ static struct omap_dss_device devkit8000_lcd_device = {
.driver_name = "generic_panel",
.type = OMAP_DISPLAY_TYPE_DPI,
.phy.dpi.data_lines = 24,
.reset_gpio = -EINVAL, /* will be replaced */
.platform_enable = devkit8000_panel_enable_lcd,
.platform_disable = devkit8000_panel_disable_lcd,
};
@ -281,6 +286,12 @@ static int devkit8000_twl_gpio_setup(struct device *dev,
/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
/* gpio + 1 is "LCD_PWREN" (out, active high) */
devkit8000_lcd_device.reset_gpio = gpio + 1;
gpio_request(devkit8000_lcd_device.reset_gpio, "LCD_PWREN");
/* Disable until needed */
gpio_direction_output(devkit8000_lcd_device.reset_gpio, 0);
/* gpio + 7 is "DVI_PD" (out, active low) */
devkit8000_dvi_device.reset_gpio = gpio + 7;
gpio_request(devkit8000_dvi_device.reset_gpio, "DVI PowerDown");